Mounting GTX 345R

[Mark33]

Originally Posted by az_gila

Does it really have to be that accessible? The FAA-required transponder checks can be done with the unit in place - the only adjustments needed are for altitude encoding and they can be done by front panel programming I bet.

You may very well be correct Gil. It just seems like every time I?ve ever had a transponder check done that the shop that did it pulled it out for some reason. Maybe I need to go to a different shop. LOL!!

Mark

[Mark33]

Originally Posted by CJ in EP

Based on the information provided by Levi a few posts ago, this is how it worked out for my install:

View from the back of the sub panel


View at the front of the sub panel


I'm pretty happy with the result, and the harness on my Stein panel reaches perfectly in this location. Thanks for the tip, Levi!

Great job Chris!!

[az_gila]

Originally Posted by Mark33

You may very well be correct Gil. It just seems like every time I?ve ever had a transponder check done that the shop that did it pulled it out for some reason. Maybe I need to go to a different shop. LOL!!

Mark

The only time the old KT76A came out of the Tiger was to check the serial number for the paperwork...

The Skyview one has it's serial number accessible from the main EFIS screen, I'm sure the Garmin is similar.

[mgomez]

Originally Posted by Mark33

I?m installing the same unit in my -7 build. I don?t know the exact location that I?m going to install it yet but I think it needs to be in an area that?s readily accessible. Out of all the rest of the avionics installed, the transponder is the one piece of equipment that?ll need to be able to come out on a regular basis to get checked. I?m planning on fabricating a couple of hinged fold-down trays between the sub panel and the firewall on which to mount all of my remote mount avionics, but I think I?ll probably mount the transponder on the bottom side of one of the fold-down trays just so it?s easily accessible/removable.

Mark

Why does it need to come out? I thought it was tested in the aircraft.

[Mark33]

Originally Posted by mgomez

Why does it need to come out? I thought it was tested in the aircraft.

Yeah, Gil was asking the same question. Maybe (hopefully) it doesn?t. Like I told Gil, it just seems like I remember mine having to come out for the shop to do their check. I?m not sure exactly why they had to remove it, but maybe it was just to verify the serial number.

Mark

[CJ in EP]

I chose this method not necessarily because I felt the GTX would need to be removed with any regularity, but instead because I didn't want anything mounted inaccessibly behind the sub panel. With five remote boxes, this was the only way to go.